83

Questions
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How many distinct eigenvalues does a random graph have?

apr 22 at 14:49 Terry Tao 27.8k●4●107●178

 
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Is there an infinite number of combinatorial designs with $r=\lambda^{2}$

dec 27 at 22:16 Yuichiro Fujiwara 1,304●1●4●14

 
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When are cones of matrices “generated” by vectors?

dec 19 at 12:16 Denis Serre 18.7k●1●31●93

 
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Graphs with a unique transmission value

nov 28 at 3:04 gordon-royle 2,677●9●20

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upper bounds on a certain matrix norm

may 21 12 at 23:20 Robert Israel 10.8k●8●22

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Degree conditions for k-factor

apr 4 12 at 17:53 Gjergji Zaimi 37.5k●2●72●149

 
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Hadamard product and inertia

sep 4 at 10:56 Michael 31●1

 
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matrices whose entries sum to zero

dec 9 at 2:00 RLC 1

 
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S-matrix conjecture: status?

aug 28 at 14:39 Felix Goldberg 2,383●4●12

 
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Generalizations of Oppenheim’s inequality

feb 5 at 22:19 quid 13.1k●31●51

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